How do I ask for someone's number who work at Subway?

Ask if she has Facebook, MySpace, or IM. It's clear she likes you, but if she's not interested-interested, asking for her number might be too forward. I think friending her on Facebook (or whatever) is more friendly and less threatening, and that way you don't have to worry about other customers getting her number or totally blowing it trying to date her if it turns out you make better friends. Good luck, because you sound totally adorable.